1. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, MOE, School of Mechanical Engineering, Tianjin University, Tianjin, P.R. China;
2. College of Mechanical Engineering, Tianjin University of Science and technology, Tianjin, P.R. China;
3. Tianjin International Joint Research and Development Center of Low-Carbon Green Process Equipment, Tianjin, P.R. China